bjorn3
b0586e9ead
git-subtree-dir: ipcd git-subtree-mainline:999da13e76git-subtree-split:e6f672bd48
38 lines
1.0 KiB
Rust
38 lines
1.0 KiB
Rust
use std::{
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fs::File,
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io::{self, prelude::*},
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os::unix::io::{AsRawFd, FromRawFd, RawFd}
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};
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fn from_syscall_error(error: syscall::Error) -> io::Error {
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io::Error::from_raw_os_error(error.errno as i32)
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}
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fn dup(file: &File, buf: &str) -> io::Result<File> {
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let stream = syscall::dup(file.as_raw_fd() as usize, buf.as_bytes()).map_err(from_syscall_error)?;
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Ok(unsafe { File::from_raw_fd(stream as RawFd) })
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}
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fn main() -> io::Result<()> {
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let mut buf = [0; 5];
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let server = File::create("chan:")?;
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let mut client = dup(&server, "connect")?;
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let mut stream = dup(&server, "listen")?;
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println!("Testing basic I/O...");
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stream.write(b"abc")?;
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stream.flush()?;
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println!("-> Wrote message");
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assert_eq!(client.read(&mut buf)?, 3);
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assert_eq!(&buf[..3], b"abc");
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println!("-> Read message");
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println!("Testing connecting to unnamed socket by name (makes no sense)...");
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assert_eq!(File::open("chan:").unwrap_err().kind(), io::ErrorKind::NotFound);
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println!("Everything tested!");
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Ok(())
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}
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